Shuttering for use in the manufacture of concrete structures



Sept. 4, 1951 R. MACKIE 2,566,523

SHUTTERING' FOR USE IN THE MANUFACTURE OF CONCRETE STRUCTURES Filed July13, 1949 2 Sheets-Sheet 1 ATTO R N EYS p 1951 R. MACKIE 2,566,523

' SHUTTERING FOR USE IN THE MANUFACTURE 4 OF CONCRETE STRUCTURES FiledJuly 13, 1949 2 Sheets-Sheet 2 INVENTOR ATTORN EY Patented Sept. 4, i951SHUTTERING FOR USE IN THE MANUFAC- TURE OF CONCRETE STRUCTURES Robert.Mackie, Glasgow, Scotland Application July 13, 1949, Serial No. 104,495In Great Britain July; 15,1948.

3 Claims. 1

This invention relates to shuttering for use inthemanufacture ofconcrete cavity walls and is a fiurthcr development of that described inthe. specification of my prior British Patent No. 612,490.

The prior construction of shuttering includes panels flanged along theirvertical edges, uprights adapted to receive the flanged edges of thepanels, separators in the concrete-receiving space to hold. the uprightapart, and withdrawable distance pieces to hold apart the uprightssupporting the panels in the cavity.

An object of the present invention is to provide an improvedconstruction permitting the insertion of permanent wall-ties before theconcrete is poured and eliminating the separators.

In shuttering according to the invention a vertical edge face of each ofthe uprights for supporting the panels formingthe faces of the cavity iformed. with wall-tie receiving notches, and filling pieces are pivotedto each of said uprights, each of said filling pieces being engageablewith a respective notch, the filling pieces being so proportioned that,when they engage the respective notches fully, there is a gap betweenthe bottom of each notch and the adjacent face of the respective fillingpiece; all of the uprights and the distance pieces are formed withtransverse slots, the slots in adjacent distance pieces and uprightsbeing adapted to register to form passageways when the shuttering isassembled; and there are provided gauge bar notched in accordance withthe desired spacing of the uprights and distance pieces and each adaptedto be inserted through a respective passageway, the notches beingengageable with the lower edge portions of the slots in the uprights andin the distance pieces.

Locking means may be provided to hold the gauge bars in place. Saidlocking means may be locking bars each inserted in a passageway alongthe face of the associated gauge bar remote from the notched face,whereby to prevent the gauge bar from being withdrawn.

Optional additional locking means to hold the gauge bars in placecomprise locking bars inserted through transverse slots at the ends ofthe gauge bars, said locking bars abutting against the outer faces ofthe outer uprights of the shuttering.

A practical embodiment of the invention is illustrated in theaccompanying drawings in which Fig. 1 is a section through a horizontalplane of a portion of the shuttering of the type referred toincorporating the improvements according to the present invention. Fig.2 is a. sec tion through- Z--2. in Fig. 1,v and Fig. 3 is a sectionthrough 3-3 in Fig. 1.

In the drawings. I denotes panels flanged at 2, the flanges of the.panels. forming the faces of the cavity being cut away to clear the.wall ties to permit the panels. to be withdrawn after the wall ties arein position. 3 denotes T-shaped uprights, 3A denotes uprights supportingthe. panels forming the. faces of the cavity, 4 denotes keys, 6 denotesdistance pieces, 1 denotes the. concrete-receiving spaces, shown partlyfilled with concrete, 9 denotes an angle piece at. the outside of acorner, and I0 denotes the. upright at the inside of a corner. IIdenotes a metal strip linking the uprights. 2. I2 denotes a walltiereceiving notch formed in a vertical edge face of each of the uprights3A. I3 denotes a filling. piece pivoted at I4 to an associated upright.3A. and engageable with an associated notch [2. I5. denotes a wall-tieresting in the gap presented between the bottom of the notch I2 and theadjacent face of the filling piece I3. I6 denotes transverse slot in theuprights 3, 3A and I0, and in the distance pieces 6, said slots being inregister to form a passageway when the shuttering is erected. I'ldenotes a gauge bar notched at I8 to engage the lower edges of the slotsI6 and hold the uprights 3, 3A and III the required distance apart. I9denotes a locking bar inserted in the passageway formed by theregistering slots I6 after the gauge bar I I has been placed inposition. 20 denotes additional locking bars formed with an abutment ateach end and engaged in transverse slots 2i at the ends of the gauge barI1, said additional locking bars 20 abutting against the uprights 3 andI0. A key 22 i inserted behind each additional locking bar 20, to holdsaid bar 20 in place, the abutments on the bar engaging the adjacentupright and preventing the bar from being withdrawn.

In practice, the uprights 3 and 3A with the corner upright I0 and thedistance pieces Ii are erected, and gauge bars I! are inserted throughthe slots I6 and the locking bars I9 put in place, thereby holding theuprights 3, 3A and I0, and the distance pieces 6 in the desired spacedrelation. The filling pieces I3 are swung about their pivots I4 awayfrom the notches I2 and wall-ties I5 are inserted in the notches, afterwhich the filling pieces I3 are swung back to engage the notches I2,thereby holding the Wall-ties I5 in place, the ends of the wall-ties I5projecting into the concrete-receiving space. The panels I are nowfitted to the uprights 3, 3A and I0.

Withdrawable distance pieces being inserted if necessary to hold thepanels forming the faces of the cavity against the associated uprights.

Concrete is poured into the concrete-receiving spaces 1, and when it isset all of the outside panels I are removed. The locking bars H! arenext removed and the additional locking bars 20, where used, are alsoremoved. The gauge bar 1'! are now withdrawn from the slots IS. Thedistance pieces 6 are next withdrawn, the inside panels I are removedand each upright 3A in the cavity is moved along the cavity in thedirection away from the wall-ties l5 carried by said upright. As theends of the wall-ties are embedded in the concrete of the wall, the tiesremain stationary and sidewise movement of the respective upright 3Acauses the filling pieces l3 pivoted thereto to come against thetationary ties and to swing about the pivots l4 away from the upright.Each upright 3A can thus be completely disengaged from the associatedwall-ties i5, and can be withdrawn from the cavity. It only remains toplug with cement or concrete the slots in the concrete walls left bythegauge bars, and the wall is complete.

I claim:

1. Shuttering for use in manufacturing a cavity wall, including panelsflanged along their vertical edges, uprights in the cavity in theformation of the wall, said uprights being adapted to receive theflanged edges of said panels, each upright having a vertical edge faceformed with notches, withdrawable distance pieces to hold said uprightsapart, filling pieces pivoted to each of said uprights and eachengageable with a notch of the respective upright, each filling piecebeing so proportioned that, when it is fully engaged with the respectivenotch, there is a gap between the bottom of said notch and the adja centface of the filling piece, all said uprights and said distance piecebeing formed with transverse slots, the slots in adjacent uprights anddistance pieces when in register forming passageways through theassembled shuttering, and gauge bars each having a face notched inaccordance with the spacing of said uprights and said distance pieces,each gauge bar being adapted to be inserted through a respectivepassageway, the notches in said gauge bars being engageable with thelower edge portions of the slots in said uprights and in said distancepieces.

2. shuttering as claimed in claim 1, including locking bar each adaptedto be inserted in the passageway along the face of an associated gaugebar remote from the notched face of said gauge bar.

3. Shuttering as claimed in claim 1, including outer uprights adapted tosupport the panels forming the outer faces of the wall in which thegauge bars are formed with transverse slots, and locking bars areinsertable in said slots, said slots being so located that said lockingbars abut against the outer faces of said outer uprights.

ROBERT MACKIE.

' REFERENCES CITED The following references are of record the file ofthis patent:

UNITED STATES PATENTS Number- Name Date 1,103,109 Venable July 14,19141,236,852 McKay Aug. 14, 1917 1,421,956 Kestler July 4, 1922 1,815,368Wotnoske July 21, 1931 2,304,851 Schlatter et al Dec. 15, 1942 FOREIGNPATENTS Number Country Date 612,490 Great Britain Nov. 12, 1948'

